test(codex): bind the writer effects to one temp path, in order - #1923
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The catalog writer tests asserted that a temp file was written, that something was hardened, and that something was published - three unbound some() checks that all hold even when the three touch different files, which is the failure they exist to catch. On Windows that is the only proof available: chmodSync moves the read-only flag alone and statSync keeps reporting 0o666, so real restriction comes from the per-user NTFS ACL rather than a mode. Order matters as much as membership. Hardening lands on the temp file and publishing moves that already-restricted file into place; a writer that published first and hardened after would leave the destination world-readable for the width of the gap, and a set-membership assertion passes for that writer too. Comparing the recorded indices is what turns this into a claim about the race instead of a claim about the call list. Driven red before landing: forcing the harden index above the publish index fails 4 of the 9 tests, and restoring returns all 9 to green. #1899 reached the same binding for this file; its other two files are already covered by #1881, which is why that branch now conflicts. This is the surviving residue, rewritten with the ordering guarantee that neither #1881 nor #1899 actually asserted.
The review of the previous commit made two points worth writing into the file. The first is why the index comparison earns its place. For the backup mutators it is the only detector there is: publishNoReplace is linkSync, so a temp hardened after publication still shares the destination's inode - chmod succeeds, statSync reads 0o600, the leftover-tmp check passes, and every other assertion in the test agrees that nothing is wrong. Only the order disagrees. The second is the limit. io is an injected seam, so supplying it bypasses the real implementations: this proves production requests hardening on the temp before publishing, not that hardening restricts anything. The previous comment talked about NTFS ACLs in a test that never reaches them, which invites exactly the over-reading this change is supposed to prevent. The ACL is covered in tests/windows-secret-acl.test.ts and the comment now says so.
The reviewer's ablation turned up something the plan did not predict. For the two backup mutators the index comparison is the only detector there is: publishNoReplace is linkSync, so a temp hardened after publication still shares the destination's inode - chmod succeeds, statSync reads 0o600, the leftover check passes, and every other assertion agrees nothing is wrong. Only the order disagrees. That is a stronger argument for the assertion than the one the plan made for it. Also records the scope limit now written into the test, and re-verifies #1899 as CONFLICTING after it briefly read UNKNOWN while GitHub recomputed.
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📝 WalkthroughWalkthroughThe atomic-write test now verifies shared temporary paths and the order write → harden → publish. The execution plan records the direct-commit outcome, validation results, backup-mutator coverage, and injected- ChangesAtomic-write ordering
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to This PR only tightens test assertions and updates development documentation; the remaining risk is limited to a minor Markdownlint formatting fix, with no actionable merge-blocking risk. Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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In `@devlog/_plan/260817_wave5_execution/020_1899_harden_ordering.md`:
- Line 44: Update the Markdown prose beginning with “#1899 cannot merge as-is”
to “Issue `#1899` cannot merge as-is”, preserving the surrounding text.
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devlog/_plan/260817_wave5_execution/020_1899_harden_ordering.mdtests/codex-catalog-writer.test.ts
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| #1899 cannot merge as-is (DIRTY). Land the one-file residue as a direct commit on | ||
| `dev`, then close #1899 with a comment naming the commit, what was taken, and | ||
| what #1881 already covered. | ||
| #1899 cannot merge as-is (CONFLICTING/DIRTY, head `8ab0aa8d0` — re-verified after a |
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📐 Maintainability & Code Quality | 🟡 Minor | ⚡ Quick win
Fix the Markdown syntax on Line 44.
#1899 cannot merge as-is lacks a space after the #, which triggers Markdownlint MD018. Because this is issue-number prose, use Issue #1899 cannot merge as-is instead.
Proposed fix
-#1899 cannot merge as-is (CONFLICTING/DIRTY, head `8ab0aa8d0` — re-verified after a
+Issue `#1899` cannot merge as-is (CONFLICTING/DIRTY, head `8ab0aa8d0` — re-verified after a📝 Committable suggestion
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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
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| #1899 cannot merge as-is (CONFLICTING/DIRTY, head `8ab0aa8d0` — re-verified after a | |
| Issue #1899 cannot merge as-is (CONFLICTING/DIRTY, head `8ab0aa8d0` — re-verified after a |
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[warning] 44-44: No space after hash on atx style heading
(MD018, no-missing-space-atx)
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In `@devlog/_plan/260817_wave5_execution/020_1899_harden_ordering.md` at line 44,
Update the Markdown prose beginning with “#1899 cannot merge as-is” to “Issue
`#1899` cannot merge as-is”, preserving the surrounding text.
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Summary
The catalog writer tests asserted that a temp file was written, that something was
hardened, and that something was published — three unbound
some()checks that allhold even when the three touch different files, which is the failure they exist to
catch.
Order matters as much as membership. Hardening lands on the temp file and publishing
moves that already-restricted file into place; a writer that published first and
hardened after would leave the destination exposed for the width of the gap, and a
set-membership assertion passes for that writer too.
For the two backup mutators the index comparison turns out to be the only detector
available.
publishNoReplaceislinkSync, so a temp hardened after publication stillshares the destination's inode —
chmodsucceeds,statSyncreads0o600, theleftover-
.tmpcheck passes, and every other assertion in the test agrees nothing iswrong. Only the order disagrees.
The second commit writes down what this does not prove.
iois an injected seam, sosupplying it bypasses
hardenSecretPathentirely: the assertion is about production'scall order (
src/config.tsandsrc/codex/internal/catalog-writer.tsboth runwrite → harden → publish), not about hardening actually restricting anything. The
previous comment discussed Windows NTFS ACLs in a test that never reaches them, which
invites exactly the over-reading this change is meant to prevent; the ACL is covered in
tests/windows-secret-acl.test.ts.This is the surviving residue of #1899. That branch conflicts because #1881 already
landed two of its three files, and its own diff asserted set membership rather than
ordering — so the ordering guarantee is new work, not a rebase.
Verification
bun test tests/codex-catalog-writer.test.ts tests/dsh-writer-lock.test.ts tests/native-main-claim.test.ts— 26 pass, 0 fail.Checklist
devSummary by CodeRabbit